What tyre pressure do you recommend for the 26" Tacx trainer tyre? Usually I have my tyres at about 1.5 bar, but these are 2.2" to 2.4" wide (or wider on the bigger hitting bike). The Tacx tyre is incredibly narrow, so I bumped pressure up to well over 2.5 bar. Is that too much, to little or just right? Calibration index on my Bushido trainer is usually somewhere at 17 or 18 and I noticed in another thread (read only) that this index should be somewhere between 10 and 15. Does this mean I should raise my pressure or lower it? And by how much?

vinay wrote:What tyre pressure do you recommend for the 26" Tacx trainer tyre? Usually I have my tyres at about 1.5 bar, but these are 2.2" to 2.4" wide (or wider on the bigger hitting bike). The Tacx tyre is incredibly narrow, so I bumped pressure up to well over 2.5 bar. Is that too much, to little or just right? Calibration index on my Bushido trainer is usually somewhere at 17 or 18 and I noticed in another thread (read only) that this index should be somewhere between 10 and 15. Does this mean I should raise my pressure or lower it? And by how much?

A narrow MTB tire, like the Tacx trainer tire, may not work on an MTB rim that is designed for very wide tires (over 2"). Did you check the spec on the Tacx trainer tire to see if it is suitable for your wider MTB rims?

I was raising a fitment issue rather than tire pressure. Putting together a tire and rim not meant for each other can cause a tire blow-off or other problems. In general, a rim designed for a 2.2"+ tire would not be suitable for a 1.25" tire.